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If the digits 1234678 and 9 are used to form four two digit prime numbers each digit is used only once find the sum of the four two digit prime numbers?
Wiki User
∙ 13y ago
You know that the odd digits have to be in the units places, and the evens in the tens place, so the general solution is:
80 + 60 + 40 + 20 + 9 + 7 + 3 + 1 = 220
Wiki User
∙ 13y ago
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Two prime numbers between 100 and 199 such that the tens digit is a prime number and the tens and ones digit taken together are a 2 digit prime number find the sum of these two prime numbers?
For the tens digit to be a prime number then it must equal 2, 3, 5 or 7. There are four 3-digit prime numbers that fit the above condition and also have the tens and units digits forming a 2-digit prime number. 131, 137, 173, 179. The person supplying the question may like to sum the various combinations.
Does reversing the order of the digits of a two digit prime number always result in a prime number?
No, reversing the order of the digits of a two-digit prime number does not always result in a prime number.
What is the number which is below 40 and it is a prime number and the digits is 11?
Try different numbers who have a sum of digits equal to 11:38: Not a prime.29: This is a prime.Starting with 1: The other digit would have to be 10, so there are no further options.29.
10.) A two-digit number is prime. When you reverse the digits, that number is also prime. What could the number be List three possibilities.?
Some numbers that you can get when you reverse the digits and they are still prime numbers are: 403 ÷ 13 = 31 2,701 ÷ 37 = 73 1,207 ÷ 17 = 71
In all how many two digit prime numbers have 4 as one of their digits?
3 41 43 47
What is the largest two-digit number that is prime and has prime numbers for both of its digits?
73 is the largest two-digit number that is prime and has prime numbers for both of its digits.
What is the largest 2 digit number that is both prime and has prime numbers for both of its digits?
73 is the largest 2 digit number that is both prime and has prime numbers for both of its digits.
Find 5 four digit numbers such that the product of the digits of each four digit prime number are also prime?
You had me until "product." The product of 4 digits can't be prime.
What 2-digit prime number has a sum of 10 when you add up its digits?
Two-digit prime numbers whose digits add up to 10 are:193773
How many two-digit prime numbers have four as one of their digits?
there are 4
What is the largest and smallest of two-digit prime numbers whose digits are also prime digits themseleves?
Smallest is 11 & Largest is 77.
What are prime digits and composite digits?
It would probably refer to a digit that is a prime number, or a composite number. Note that mathematicians normally talk about prime and composite NUMBERS, not individual digits.
What is largest two digit prime numbers whose digits are also prime?
73 satisfies your condition.
What three prime numbers multiplied equals to a 200 hundred digit number?
Any prime numbers of about 66 or 67 digits will do.
What are two prime numbers that if multiplied would generate a 400-digit number?
Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.
What is the smallest two digit prime number whose digits themselves are prime?
The smallest two-digit prime number whose digits themselves are prime is 23. Both 2 and 3 are prime numbers, and together they form the prime number 23.
What is the lowest prime number that has all of the numbers prime?
The smallest prime number in which all of the digits are also prime is 2.The smallest multi-digit prime number in which all of the digits are also prime is 23.
